an·a·phy·lax·is ( n  -f-lk s s)n. 1. Hypersensitivity especially in animals to a substance, such as foreign protein or a drug, that is caused by exposure to a foreign substance after a preliminary exposure. 2. See anaphylactic shock. [ana- + (pro)phylaxis.] an a·phy·lactic (-lktk), ana·phy·lactoid (-toid) adj.an a·phy·lacti·cal·ly adv. |
anaphylaxis [ˌænəfɪˈlæksɪs]
n
(Medicine) extreme sensitivity to an injected antigen, esp a protein, following a previous injection
[from ana- + (pro)phylaxis]
anaphylactic , anaphylactoid adj
anaphylactically adv
| anaphylaxis (n-f-lkss) See anaphylactic shock. |
anaphylaxis
extreme sensitivity to an antigen, causing secretion of histamine and attendant adverse reactions, sometimes fatal. — anaphylactic, adj.
See also: Disease and Illness
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | anaphylaxis - hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance drug - a substance that is used as a medicine or narcotic anaphylactic shock - a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock |
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